Recent results on direct photons from CDF (Collider Detector at Fermilab)

Conference · Fri Jun 01 04:00:00 EDT 1990

OSTI ID:7096881

Harris, R M

We report on preliminary measurements of direct photons in {bar p}p collisions at {radical}s = 1.8 TeV from the 1988--89 run of the Collider Detector at Fermilab (CDF). The inclusive direct photon cross section, measured for photon transverse momentum in the range 13 < P{sub t} < 68 GeV, has an excess at low P{sub t} compared to recent Quantum Chromodynamic (QCD) calculations. The pseudorapidity distribution of the away-side jet, for events with 27 < P{sub t} < 33 GeV, agrees with QCD predictions. Measurements of the K{sub t} kick in photon-jet events are also presented. 8 refs., 10 figs., 1 tab.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 7096881
• Report Number(s): FNAL/C-90/118-E; CONF-9004112--2; ON: DE90012668
• Country of Publication: United States
• Language: English

Related Subjects

645100* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BREMSSTRAHLUNG
CDF
CROSS SECTIONS
DATA
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FIELD THEORIES
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
JET MODEL
LINEAR MOMENTUM
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEON-ANTINUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE RAPIDITY
PARTONS
PHOTONS
POSTULATED PARTICLES
PROTON-ANTIPROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATIONS
TRANSVERSE MOMENTUM